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Intel Core i5-10400 Desktop Processor 6 Cores up vs Intel® Core™ Ultra 5 Processor 250KF Plus 18 cores

Updated August 2026 — Intel Core i5-10400 Desktop Processor 6 Cores up wins on power and compatibility, Intel® Core™ Ultra 5 Processor 250KF Plus 18 cores wins on overclocking and performance.

The Intel Core Ultra 5 Processor 250KF Plus offers superior performance for demanding tasks, while the Intel Core i5-10400 is a more budget-friendly option for casual users.

Why Intel Core i5-10400 Desktop Processor 6 Cores up is better

Price

i5-10400 is significantly cheaper.

Power Consumption

i5-10400 has lower power usage.

General Use

i5-10400 is sufficient for casual gaming.

Why Intel® Core™ Ultra 5 Processor 250KF Plus 18 cores is better

Performance

Ultra 5 has more cores and higher clock speed.

Gaming Capability

Ultra 5 supports PCIe 5.0 and DDR5.

Overclocking

Ultra 5 is unlocked for performance tuning.

Overall score

Intel Core i5-10400 Desktop Processor 6 Cores up
75
Intel® Core™ Ultra 5 Processor 250KF Plus 18 cores
90

Specifications

SpecIntel Core i5-10400 Desktop Processor 6 Cores upIntel® Core™ Ultra 5 Processor 250KF Plus 18 cores
Cores618
Threads1224
Max Clock4.3 GHz5.3 GHz
SocketLGA 1200LGA 1851
Base Power65W125W

Dimension comparison

Intel Core i5-10400 Desktop Processor 6 Cores upIntel® Core™ Ultra 5 Processor 250KF Plus 18 cores

Overview of the Intel Core i5-10400 and Intel Core Ultra 5 Processor 250KF Plus

The Intel Core i5-10400 is priced at $205.13, while the Intel Core Ultra 5 Processor 250KF Plus is available for $240.58, making the i5-10400 about 17% cheaper. Both processors are designed for different user needs, with the i5-10400 catering to mid-range users and the Ultra 5 targeting more demanding applications. Understanding their features will help users choose the right CPU for their needs.

Performance Comparison

The Intel Core Ultra 5 Processor 250KF Plus features a high-performance core configuration with 18 cores, including 6 performance (P) cores and 12 efficient (E) cores, allowing it to handle demanding tasks efficiently. In contrast, the Intel Core i5-10400 has 6 cores and 12 threads, which is sufficient for everyday tasks and gaming but may struggle with intensive workloads compared to the Ultra 5. The Ultra 5 can reach up to 5.3 GHz, whereas the i5-10400 maxes out at 4.3 GHz, indicating a clear advantage in processing power for the Ultra 5.

Gaming and Productivity Capabilities

For gaming and productivity, the Intel Core Ultra 5 Processor 250KF Plus is a significant upgrade, as it is optimized for high-performance tasks and can handle the latest games and applications efficiently. The i5-10400, while capable, is more suited for casual gaming and general use, making it a better fit for users who do not require top-tier performance. The Ultra 5's ability to support PCIe 5.0 and DDR5 memory enhances its gaming capabilities, whereas the i5-10400 is limited to the Intel 400 series chipset.

Compatibility and System Requirements

Compatibility differs significantly between the two processors. The Intel Core i5-10400 is designed for LGA 1200 socket motherboards and is compatible with Intel's 400 series chipset. On the other hand, the Intel Core Ultra 5 Processor 250KF Plus requires LGA 1851 socket motherboards and supports the newer Intel 800 series chipsets, which enable higher performance features such as PCIe 5.0 and DDR5 memory. For users looking to build a system with cutting-edge technology, the Ultra 5 is the clear choice.

Power Consumption

The Intel Core i5-10400 has a base power consumption of 65W, making it a more energy-efficient option for users who prioritize lower power usage. Conversely, the Intel Core Ultra 5 Processor 250KF Plus has a base power consumption of 125W and a maximum turbo power of 250W, reflecting its higher performance capabilities. Users should consider their power supply and cooling solutions, as the Ultra 5 may require more robust components to manage its increased power demands.

Overclocking Potential

The Intel Core Ultra 5 Processor 250KF Plus is unlocked for performance tuning, making it an attractive option for enthusiasts and overclockers who want to push their systems to the limit. This feature is particularly beneficial for users who seek maximum performance and are willing to invest time in tuning their settings. In contrast, the Intel Core i5-10400 does not offer the same level of overclocking potential, making it less suitable for users looking to customize their performance extensively.

Price and Value

With the Intel Core i5-10400 priced at $205.13 and the Ultra 5 at $240.58, the price difference is significant. The i5-10400 is about 17% cheaper, appealing to budget-conscious users. However, the Ultra 5’s higher price tag reflects its superior performance and features tailored for demanding applications. Users must weigh their specific needs against their budget to determine which processor offers the best value.

Which should you buy?

Choosing between the Intel Core i5-10400 and the Intel Core Ultra 5 Processor 250KF Plus comes down to the intended use and budget. If you are a casual user focused on general productivity and gaming without breaking the bank, the i5-10400 is an excellent choice due to its lower price and adequate performance. However, if you require a high-performance processor for gaming, content creation, or other demanding tasks, the Ultra 5 is worth the investment for its superior specs and capabilities. Ultimately, your decision should reflect your specific needs, preferences, and budget considerations.